EP3444558A1 - Kühler für ein fahrzeug - Google Patents

Kühler für ein fahrzeug Download PDF

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Publication number
EP3444558A1
EP3444558A1 EP18166760.1A EP18166760A EP3444558A1 EP 3444558 A1 EP3444558 A1 EP 3444558A1 EP 18166760 A EP18166760 A EP 18166760A EP 3444558 A1 EP3444558 A1 EP 3444558A1
Authority
EP
European Patent Office
Prior art keywords
tube
cooler
layers
inosculation
diffusion preventing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18166760.1A
Other languages
English (en)
French (fr)
Inventor
Dong Young Lee
Seok Ha
Sung Ii Yoon
Tae Ho Jeong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Publication of EP3444558A1 publication Critical patent/EP3444558A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the present invention relates to a cooler for a vehicle. More particularly, the present invention relates to a cooler for a vehicle configured for improving durability and corrosion resistance as a material forming a tube is to be better.
  • EGR exhaust gas recirculation
  • Such an EGR system circulates a portion of an exhaust gas which is discharged from an engine as an intake gas to function to reduce an oxygen amount within a mixer, to reduce an exhaust amount of an exhaust gas, and to reduce an amount of harmful material within the exhaust gas.
  • the EGR system may include a cooler for cooling exhaust gas.
  • a coolant passage through which coolant is passed and a tube through which exhaust gas is passed are provided to the cooler such that the cooler performs heat exchange between exhaust gas and coolant.
  • Various aspects of the present invention are directed to providing a cooler for a vehicle having advantages of improving brazing performance and durability.
  • a cooler for a vehicle may be configured so that a tube forming an exhaust gas passage is mounted in a cooler housing forming a coolant passage and a cooling pin is inosculated in the tube with a set pattern such that the exhaust gas passage is partitioned.
  • the cooler may include the tube formed in the clad metal configured such that inosculation layers are formed at both external surfaces of diffusion preventing layers which are A1000 series in a state of forming the diffusion preventing layers at both surfaces of a lead layer including aluminum alloy.
  • the tubes may be disposed apart from each other as a set gap with respect to a vertical direction in the cooler housing and may be inosculated to the cooler housing on the present state.
  • a lead layer may include aluminum alloy including manganese.
  • the lead layer may include an A3000 series material.
  • the inosculation layer may include an A4000 series material for brazing inosculating the tube with the cooling pin.
  • a thickness of the inosculation layer and a thickness of the diffusion preventing layer may be predetermined in 5-10% ranges of an entire thickness of the clad metal.
  • the cooling pin may include an A3000 series material.
  • the cooling pin may be inosculated with the tube through the inosculation layer in a state of being interposed in the tube with a protrusions and depressions shape.
  • dividing names of components into first, second and the like is to divide the names because the names of the components are the same as each other and an order thereof is not particularly limited.
  • FIG. 1 is a perspective view of a cooler for a vehicle according to an exemplary embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1
  • FIG. 3 is a drawing representing materials of a tube applied to a cooler for a vehicle according to an exemplary embodiment of the present invention.
  • a cooler 1 for a vehicle is configured to cool exhaust gas which is re-circulated from an exhaust line of an engine system to an intake line.
  • the cooler 1 cools exhaust gas being re-circulated by use of coolant, and for the present purpose.
  • an intake pipe 3 flowing coolant thereinto and an exhaust pipe 5 exhausting coolant therethrough are connected to the cooler 1.
  • a structure of the cooler 1 according to an exemplary embodiment of the present invention may be applied to various heat exchangers.
  • the cooler 1 includes a cooler housing 10, tubes 20, and cooling pins 30.
  • the cooler housing 10 is configured to form a coolant passage 11 therein, and so that coolant is flowed in and exhausted through the intake pipe 3 and the exhaust pipe 5 which are connected to one side thereof and the other side thereof.
  • the tubes 20 are disposed apart from each other as a set gap with respect to a vertical direction in the cooler housing 10 and are inosculated to the cooler housing 10 on the present state.
  • the tubes 20 respectively form an exhaust gas passage 21.
  • the tube 20 includes a clad metal including five layers.
  • the tube 20 is formed in the clad metal including a lead layer 23 including aluminum alloy including manganese to be positioned at the center, diffusion preventing layers 25 inosculated on both surfaces of the lead layer 23, and inosculation layers 27 inosculated on both external surfaces of the diffusion preventing layers 25.
  • the lead layer 23 formed in an aluminum-high manganese alloy material which includes a large amount of manganese.
  • stiffness and corrosion resistance of the lead layer 23 are configured to be improved.
  • the lead layer 23 includes a material including A3000 series (Al-Mn series).
  • the tube 20 is configured so that the diffusion preventing layers 25 are formed at both surfaces of the lead layer 23.
  • a thickness of the diffusion preventing layer 25 is predetermined in 5-10% range of an entire thickness of the clad metal.
  • the diffusion preventing layer 25 includes a material including A1000 series (pure Al series).
  • the tube 20 is configured so that the inosculation layers 27 are formed at both external surfaces of the diffusion preventing layers 25.
  • the inosculation layer 27 includes a filler material for brazing inosculating with a cooling pin 30.
  • the brazing inosculation is an inosculation method to do not melt a basic material and only melt a filler metal by use of the filler metal having a low melting point temperature in comparison with the basic material being inosculated.
  • a thickness of the inosculation layer 27 is predetermined in 5-10% ranges of an entire thickness of the clad metal to be like with the diffusion preventing layer 25.
  • the inosculation layer 27 includes a material including A4000 series (Al-Si series).
  • the cooling pin 30 partitions the exhaust gas passage 21 in the tube 20.
  • the cooling pin 30 is formed in a protrusions and depressions shape and is brazing-inosculated with the tube 20 in a state of interposing in the tube 20.
  • the cooling pin 30 is brazing-inosculated by use of the inosculation layer 27, which is disposed at both surfaces of the tube 20, as a filler metal.
  • the cooling pin 30 includes a material being included to A3000 series (Al-Mn series).
  • FIG. 4(a) is an experiment photograph representing diffusing factor of manganese after performing SWAAT to a tube 200 applied to a cooler for a vehicle according to a relative embodiment
  • FIG. 4(b) is an experiment photograph representing diffusing factor of manganese after performing SWAAT to the tube 20 applied to the cooler 1 for a vehicle according to an exemplary embodiment of the present invention.
  • the SWAAT is a method exposing a test piece during a predetermined time on a predetermined pH and a predetermined temperature after adding acetic acid to artificial sea water.
  • the tube 200 applied to a cooler for a vehicle forms diffusion preventing layers, which is A3003, at both surfaces with respect to a lead layer, which is A3000 series, and forms a inosculation layers, which is A4000 series, both external surfaces of the diffusion preventing layers.
  • the tube 200 of FIG. 4(a) according to a relative embodiment is corroded in many portions, while, the tube 20 of FIG. 4(b) according to an exemplary embodiment is corroded in very little portions.
  • the tube 20 applied to the cooler 1 for a vehicle according to an exemplary embodiment of the present invention is configured for improving corrosion resistance by the diffusion preventing layer 25 which is A1000 series.
  • FIG. 5 is an experiment graph comparing thickness of a tube applied to a cooler for a vehicle according to an exemplary embodiment of the present invention with thickness of a tube applied to a cooler for a vehicle according to a relative embodiment as time passed.
  • FIG. 5 represents an experiment about change of thickness by corrosion of the tubes according to an exemplary embodiment and a relative embodiment.
  • an initial thickness of the tube 20 according to an exemplary embodiment of the present invention and an initial thickness of a tube according to a relative embodiment are predetermined in 0.5t to 0.6t range.
  • the thickness of the tube 20 according to an exemplary embodiment of the present invention is to be decreased as 0.025t when four weeks passing, as 0.051t when six weeks passing, as 0.059t when eight weeks passing, and as 0.063t when ten weeks passing.
  • the thickness of the tube 200 according to a relative embodiment is to be decreased as 0.080t when four weeks passing, as 0.093t when six weeks passing, as 0.108t when eight weeks passing, and as 0.123t when ten weeks passing.
  • the amount of the remained thickness when ten weeks passing in the tube 20 according to an exemplary embodiment of the present invention and the tube 200 according to a relative embodiment are respectively 87% and 75%.
  • the amount of the decreased thickness of the tube 20 according to an exemplary embodiment of the present invention is small as 49% in comparison with the amount of the decreased thickness of the tube 200 according to an exemplary embodiment.
  • improving brazing performance and durability can be improved as it is prevented by the diffusion preventing layer 25 which is A1000 series that manganese is diffused when the cooling pin 30 which is inserted into the tube 20 is brazing-inosculated with the tube 20.
  • corrosion resistance can be improved in the cooler 1 for a vehicle according to an exemplary embodiment of the present invention as corrosion of the tube 20 is suppressed by the diffusion preventing layer 25 which is A1000 series.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP18166760.1A 2017-08-18 2018-04-11 Kühler für ein fahrzeug Withdrawn EP3444558A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170104639A KR20190019542A (ko) 2017-08-18 2017-08-18 차량용 쿨러

Publications (1)

Publication Number Publication Date
EP3444558A1 true EP3444558A1 (de) 2019-02-20

Family

ID=61971927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18166760.1A Withdrawn EP3444558A1 (de) 2017-08-18 2018-04-11 Kühler für ein fahrzeug

Country Status (4)

Country Link
US (1) US20190055906A1 (de)
EP (1) EP3444558A1 (de)
KR (1) KR20190019542A (de)
DE (1) DE102017129480A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080115493A1 (en) * 2006-11-17 2008-05-22 Wolf Eric P Diesel combustion engine having a low pressure exhaust gas recirculation system employing a corrosion resistant aluminum charge air cooler
US20100147500A1 (en) * 2005-08-31 2010-06-17 Showa Denko K.K. Clad plate and process for production thereof
JP2012087342A (ja) * 2010-10-18 2012-05-10 Showa Denko Kk 熱交換器用アルミニウムクラッド材
US20120237793A1 (en) * 2011-03-16 2012-09-20 Baumann Stephen F Multi-layer brazing sheet
US20140182821A1 (en) * 2011-05-20 2014-07-03 Constellium France Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060109911A (ko) 2003-11-17 2006-10-23 노파르티스 아게 디펩티딜 펩티다제 ⅳ 억제제의 용도
US20080274367A1 (en) * 2004-10-13 2008-11-06 Alcoa Inc. Recovered high strength multi-layer aluminum brazing sheet products

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100147500A1 (en) * 2005-08-31 2010-06-17 Showa Denko K.K. Clad plate and process for production thereof
US20080115493A1 (en) * 2006-11-17 2008-05-22 Wolf Eric P Diesel combustion engine having a low pressure exhaust gas recirculation system employing a corrosion resistant aluminum charge air cooler
JP2012087342A (ja) * 2010-10-18 2012-05-10 Showa Denko Kk 熱交換器用アルミニウムクラッド材
US20120237793A1 (en) * 2011-03-16 2012-09-20 Baumann Stephen F Multi-layer brazing sheet
US20140182821A1 (en) * 2011-05-20 2014-07-03 Constellium France Alloys for a heat exchanger tube having an inner protective cladding and brazed disrupter

Also Published As

Publication number Publication date
DE102017129480A1 (de) 2019-02-21
US20190055906A1 (en) 2019-02-21
KR20190019542A (ko) 2019-02-27

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